Home / 27,855.84-38,440.40-15,280.48

Finding the Fourth Proportional to 27,855.84, 38,440.40 and 15,280.48

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Solution

The fourth proportional to 27,855.84, 38,440.40 and 15,280.48 is: 21,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.84 : 38,440.40 = 15,280.48 : x
  2. Step 2: Convert to fraction form
    27,855.84/38,440.40 = 15,280.48/x
  3. Step 3: Cross multiply
    27,855.84x = 38,440.40 × 15,280.48
  4. Step 4: Simplify right side
    27,855.84x = 587,387,763.39
  5. Step 5: Solve for x
    x = 587,387,763.39/27,855.84
  6. Step 6: Final answer
    x = 21,086.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.